Air conditioner



FIG. 1 is a front perspective view of the front, right, and top sides of an air conditioner showing our new design;

FIG. 2 is a front perspective view of the front, right, and bottom sides thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines shown represent unclaimed subject matter of the air conditioner and form no part of the claimed design. 

CLAIM The ornamental design for an air conditioner, as shown and described. 